Watch Scooby-Doo! and the Samurai Sword

"Scooby-Doo! and the Samurai Sword" (2009) is the 13th in a series of direct-to-video cartoons based on the Scooby-Doo. Set in Japan, it pits Scooby-Doo and his friends against the Black Samurai, who turns out to be the ghost of an evil warlord seeking to reclaim a magic swords that he had wielded while alive. There is also a human villain who hopes to use the Black Samurai's power for her own ends.